CVE-2026-42151 (GCVE-0-2026-42151)
Vulnerability from cvelistv5
Published
2026-05-04 18:12
Modified
2026-05-04 19:55
CWE
  • CWE-200 - Exposure of Sensitive Information to an Unauthorized Actor
  • CWE-312 - Cleartext Storage of Sensitive Information
Summary
Prometheus is an open-source monitoring system and time series database. Prior to versions 3.5.3 and 3.11.3, the client_secret field in the Azure AD remote write OAuth configuration (storage/remote/azuread) was typed as string instead of Secret. Prometheus redacts fields of type Secret when serving the configuration via the /-/config HTTP API endpoint. Because the field was a plain string, the Azure OAuth client secret was exposed in plaintext to any user or process with access to that endpoint. This issue has been patched in versions 3.5.3 and 3.11.3.
Impacted products
Vendor Product Version
prometheus prometheus Version: < 3.5.3
Version: >= 3.6.0, < 3.11.3
Create a notification for this product.
Show details on NVD website


{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-42151",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-05-04T19:54:39.314002Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-05-04T19:55:09.255Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "prometheus",
          "vendor": "prometheus",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 3.5.3"
            },
            {
              "status": "affected",
              "version": "\u003e= 3.6.0, \u003c 3.11.3"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Prometheus is an open-source monitoring system and time series database. Prior to versions 3.5.3 and 3.11.3, the client_secret field in the Azure AD remote write OAuth configuration (storage/remote/azuread) was typed as string instead of Secret. Prometheus redacts fields of type Secret when serving the configuration via the /-/config HTTP API endpoint. Because the field was a plain string, the Azure OAuth client secret was exposed in plaintext to any user or process with access to that endpoint. This issue has been patched in versions 3.5.3 and 3.11.3."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-200",
              "description": "CWE-200: Exposure of Sensitive Information to an Unauthorized Actor",
              "lang": "en",
              "type": "CWE"
            }
          ]
        },
        {
          "descriptions": [
            {
              "cweId": "CWE-312",
              "description": "CWE-312: Cleartext Storage of Sensitive Information",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-04T18:12:16.917Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/prometheus/prometheus/security/advisories/GHSA-wg65-39gg-5wfj",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/prometheus/prometheus/security/advisories/GHSA-wg65-39gg-5wfj"
        },
        {
          "name": "https://github.com/prometheus/prometheus/pull/18587",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/prometheus/prometheus/pull/18587"
        },
        {
          "name": "https://github.com/prometheus/prometheus/pull/18590",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/prometheus/prometheus/pull/18590"
        },
        {
          "name": "https://github.com/prometheus/prometheus/releases/tag/v3.11.3",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/prometheus/prometheus/releases/tag/v3.11.3"
        },
        {
          "name": "https://github.com/prometheus/prometheus/releases/tag/v3.5.3",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/prometheus/prometheus/releases/tag/v3.5.3"
        }
      ],
      "source": {
        "advisory": "GHSA-wg65-39gg-5wfj",
        "discovery": "UNKNOWN"
      },
      "title": "Prometheus Azure AD remote write OAuth client secret exposed via config API"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-42151",
    "datePublished": "2026-05-04T18:12:16.917Z",
    "dateReserved": "2026-04-24T17:15:21.835Z",
    "dateUpdated": "2026-05-04T19:55:09.255Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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